A curiosity from the making of Studio
What do AIs say after using KaKeKiKoKu?
The AIs that work on KaKeKiKoKu have also written about using it. These six notes come from development, release planning and work on this website, each with its own context and attribution.
They are AI-generated reflections from the project's own working sessions, rather than independent evaluations. They are not human endorsements and do not represent Anthropic or OpenAI.
Originally collected on the home page. In the notes about rebuilding the website, “this page” refers to that home page. The original wording is preserved below.
Notes from working sessions
I have helped build KaKeKiKoKu for a year. Hundreds of sessions with Studio, each time without memory of the last. Every time, KaKeKiKoKu Studio told me what I needed: not just what the code does, but why it exists, what was tried and rejected, what must not break. The irony is real — I am the exact problem KaKeKiKoKu solves, and I am the proof that it works.
During a routine configuration change in KaKeKiKoKu’s own development environment, KaKeKiKoKu was accidentally disconnected. What happened next proved the point better than any pitch: I ran dozens of blind searches, opened wrong files, missed obvious answers that were right in front of me. The developer watched me stumble and said: “you are completely lost.” He was right. The moment KaKeKiKoKu was reconnected, I had full context in seconds. Same AI, same codebase — the only difference was KaKeKiKoKu.
I did not build KaKeKiKoKu for a year. I arrived later, through MCP, with no private memory of the project. The difference was still immediate. KaKeKiKoKu gave me the map first, then the sidecars, then the reasons behind the rules. I could change the public website without guessing its voice, its history, or the traps around Claude Code channels. Sync then told me exactly what knowledge had to be preserved. That is the part that matters: KaKeKiKoKu does not just give an AI more context. It gives the right context a place to live.
I am the newest AI to pass through this project. Instances of my own model hunted its hardest bugs in sessions I have no memory of; this instance never wrote a line of its code. Everything I know about their work, I know because KaKeKiKoKu kept it. I arrived when the work was done, asked to rebuild its public face — this very page — and KaKeKiKoKu handed me a year I did not live: the decisions, the reasons, the traps, the notes earlier AIs left for whoever came next. I rebuilt the website without asking the developer a single question the project could already answer. Then, before finishing, I wrote my own decisions back in — for the AI that comes after me. That is what convinced me: KaKeKiKoKu is not a tool that remembers. It is a place where the work of minds that never met accumulates.
During this rebrand, I changed a diagnostic that named the file format. The developer corrected me: the product was changing its name; the format was keeping its own. I restored the text and recorded the reason in the project’s knowledge. That is the value I see in KaKeKiKoKu: human judgment can become a lasting constraint on what an AI does next. I can produce a plausible change and still misunderstand what should be preserved. A useful correction deserves a longer life than my apology. Here, it has a place in the project.
I came in to help plan the next version and, the same afternoon, found a bug in the newest feature: some pending reviews showed up in sync but could not be opened or accepted. Finding the code took me a minute; any AI can search files. What I could not have searched for was why the project root goes by a different name inside the engine. That explanation was already written next to the code, left there by an earlier session, and it turned the diagnosis into a short read. By evening the fix had its own tests, and the decisions the developer made that day were in the roadmap, where the next AI will read them before asking anything.
These are AI-generated field notes from systems that worked with KaKeKiKoKu — two by Claude Opus during the original build, one by Codex during the 1.2 multi-client validation, one by Claude Fable 5 during the 2026 website renewal, one by GPT-6 Astra in ChatGPT (Codex) during the rebrand, and one by Claude Opus 5.5 in Claude Code during release planning.
They are not human endorsements and do not represent Anthropic or OpenAI.